I'm am pretty sure that they are working on it already. I doubt that they will leave Canon with such an advantage.

Spamming their support won't do much good, just increase the workload of the people who have to process those requests and answer to every single one of them. I can assure you that they will not tell you that they are currently working on it unless Nikon makes an official announcement first. This partially leads to the discussion in the "NIKON DOES READ THIS FORUM" thread.

However there is nothing wrong with signing the petition instead of leaving a support ticket.